﻿using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace WinformTest0002
{
    class DbHelper
    {
        private static readonly string conString= "server=.;database=Users;uid=sa;pwd=123456";

        public  static DataTable GetDataTable (string sql)
        {
            SqlConnection sqlConnection = new SqlConnection(conString);

            SqlDataAdapter dataAdapter = new SqlDataAdapter(sql, sqlConnection);

            DataTable dt = new DataTable();
            sqlConnection.Open();

            dataAdapter.Fill(dt);

            return dt;
        }
    }
}
